CN103638794B - Marine diesel desulfurization packed tower - Google Patents
Marine diesel desulfurization packed tower Download PDFInfo
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- CN103638794B CN103638794B CN201310692439.0A CN201310692439A CN103638794B CN 103638794 B CN103638794 B CN 103638794B CN 201310692439 A CN201310692439 A CN 201310692439A CN 103638794 B CN103638794 B CN 103638794B
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- spray
- air intake
- intake duct
- tower body
- packed tower
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Abstract
It is an object of the invention to provide marine diesel desulfurization packed tower, including filler tower body, filler tower body be provided above waste gas outlet, the lower section of filler tower body arranges waste liquid outlet, the bottom of packed tower body sidewall arranges air intake duct interface, air intake duct interface is connected with air intake duct, air intake duct uses downward-sloping mode to arrange, cleaning mixture pre-spray equipment is installed in air intake duct, the pre-spray equipment of cleaning mixture is positioned at air intake duct upper inner wall side, the spray direction of the pre-spray equipment of cleaning mixture is the direction of flue gas circulation in flue, it is positioned at the position above air intake duct interface in filler tower body and spray catalytic unit is installed, described spray catalytic unit includes high temperature spray system above and is positioned at the packing layer of lower section, the top of spray catalytic unit installs demister and purging system successively.The present invention effectively reduces the circulating resistance of waste gas, and makes SOx GAS ABSORPTION rate improve to more than 98%.
Description
Technical field
The present invention relates to a kind of diesel emission device, specifically boat diesel engine tapping equipment.
Background technology
Along with the prosperity day by day of maritime industry, the harm of environment is also got over by the produced waste gas of marine diesel burning
Coming the most serious, SOx is wherein bigger to environmental hazard composition.The SOx of boats and ships discharge derives from fuel oil institute
The sulfur contained.To this end, International Maritime Organization IMO has carried out strict restriction to marine fuel oil sulfur content.At present
Sulfur method has many, be broadly divided into burning before desulfurization, burning in desulfurization and burning after desulfurization, wherein with combustion
After burning, sulfur method is the most economic and practical.Waste gas washing desulphurization packed tower is the most frequently used one of desulfurization after burning
Method.As a kind of mass transfer apparatus, packed tower has that efficiency is high, pressure drop is low, liquid holdup is little, simple structure,
The advantages such as easy, small investment are installed and are widely used in absorption and separation operation.In recent years, packed tower has been carried out greatly
Quantifier elimination, achieves breakthrough.At present the structured packing maximum gauge of application is up to 14～20m,
Breach the traditional view being in the past only limitted to trourelle.Therefore, packed tower can be used for the washing of boat diesel engine waste gas
Desulfurization closed cycle.
The mean temperature of two-stroke boat diesel engine waste gas is about 280 DEG C, EGT after waste heat boiler
Typically can drop to 180 DEG C.Research shows, the desulfuration efficiency of packed tower desulfurization technology is along with inlet flue gas temperature
Rising and reduce, temperature higher than 197 DEG C time desulfuration efficiency be zero.And between 25 DEG C～100 DEG C, de-
Sulphur efficiency is up to more than 98%.SO in shiphoard machinery system exhaust gases after combustion2Account for the 95% of SOx, SO3's
Content only accounts for 5%, and SO3Dissolubility much larger than SO2, and the absorbing liquid in SOx and desulfurization packed tower
The SO generated after reaction4 2-Compare SO3 2-Stable.Therefore, the waste gas before entering packed tower is carried out cleaning mixture
Pre-spray reduces its temperature, and with by the SO in waste gas2It is catalytically converted into SO3, can be effectively improved de-
The absorption efficiency of sulfur packed tower.
The patent " pretreatment unit of seawater desulfurization device " of Application No. 201110177092.7 proposes
A kind of washing desulphurization pre-spray equipment of packed tower air intake duct, this desulfurization packed tower air intake duct uses vertical design,
Pre-spray equipment is then installed on the vertical component of air intake duct.Although described pre-spray equipment can be to waste gas
Wash, but due to the vertical design of packed tower gas flue, considerably increase the resistance of waste gas.
Application No. 201010137474.2 patent " catalyst filling of a kind of seawater desulfurizing process and
Packed bed " in propose a kind of catalyst filling and be made up of three layers of honeycomb circulus, including intermediate layer honeycomb
Ring, upper epidermis honeycomb ring and layer honeycomb ring.Described catalyst filling only gives washing desulphurization filler
The structure of filler in tower, does not point out which kind of catalyst of top layer, and the core of catalyst filling is catalyst.
Summary of the invention
It is an object of the invention to provide and the absorbance of SOx can be made to reach more than 98%, and boats and ships can be removed simultaneously
Particulate matter in diesel exhaust and greasy dirt, the marine diesel effectively solving packed tower device blockage takes off
Sulfur packed tower.
The object of the present invention is achieved like this:
Marine diesel desulfurization packed tower of the present invention, is characterized in that: include filler tower body, filler tower body upper
Side arranges waste gas outlet, and the lower section of filler tower body arranges waste liquid outlet, and the bottom of packed tower body sidewall is arranged
Air intake duct interface, air intake duct interface is connected with air intake duct, and air intake duct uses downward-sloping mode to arrange, enters
Installing the pre-spray equipment of cleaning mixture in air flue, the pre-spray equipment of cleaning mixture is positioned at air intake duct upper inner wall side,
The spray direction of the pre-spray equipment of cleaning mixture is the direction of flue gas circulation in flue, is positioned in filler tower body
Spray catalytic unit is installed in position above air intake duct interface, and described spray catalytic unit includes above
High temperature spray system and be positioned at lower section packing layer, spray catalytic unit top install successively demister and
Purging system.
The present invention can also include:
1, described packing layer area load has CrO3-SnO2Catalyst.
2, described spray catalytic unit includes two groups, and two groups of spray catalytic units are arranged in order from top to bottom,
Often the packing layer of group spray catalytic unit is respectively fixed on air intake duct inwall by a support screen.
3, the pre-spray equipment of described cleaning mixture uses spray nozzle type liquid spray thrower, and the cleaning mixture of sprinkling is temperature
25 DEG C～the alkaline solution of 50 DEG C.
Present invention have an advantage that the pre-spray equipment of cleaning mixture of the present invention can make boat diesel engine EGT
It is cooled to 60～70 DEG C, makes the SOx GAS ABSORPTION rate of desulfurization packed tower improve to more than 98%.Except there being fall
In low EGT and increase waste gas outside the effect of SOx absorption efficiency, set up cleaning mixture at air intake duct and spray in advance
Waste gas also can be washed by shower device, removes the partial particulate thing in waste gas, in order to avoid these particulate matters enter
Occluding device in packed tower.Packing layer at desulfurization packed tower uses area load to have CrO3-SnO2Catalyst
Filler can be by the SO in waste gas2It is catalytically oxidized to SO3Gas, effectively prevent SO2Gas is washed with alkalescence
The SO generated after washing liquid reaction3 2-Unstable shortcoming.The present invention can increase the desulfuration efficiency of packed tower, fall
Low energy consumption and prevent equipment from blocking.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
In conjunction with Fig. 1, the present invention includes the pre-spray equipment of air intake duct 1, cleaning mixture 2, supports screen 3, filler
Layer 4, high temperature spray system 5, demister 6, purging system 7, waste gas outlet 8, waste liquid outlet 9, filler
Tower body 10, sets up the pre-spray equipment of cleaning mixture 2, entering of packed tower 10 in the air intake duct 1 of packed tower 10
Air flue 1 uses downward-sloping layout.The pre-spray equipment of cleaning mixture 2 uses spray nozzle type liquid spray thrower.Shower nozzle
Formula liquid spray thrower is arranged on the upper end of air intake duct, and the air intake duct 1 of packed tower 10 takes downward-sloping setting.
The spray direction of spray nozzle type liquid spray thrower is along flue direction, and the cleaning mixture of spray fills with waste gas from top to bottom
After touch, waste liquid flows in the waste liquid pool bottom packed tower 10 tap.The suction of spray in spray nozzle type liquid spray thrower
Receiving liquid temp is 25 DEG C～the alkaline solution of 50 DEG C.Waste gas through the pre-spray equipment of cleaning mixture 2 in gas inlet road 1,
After the alkaline wash cooling sprayed by device 2, temperature can be down to 60～75 DEG C, can absorb waste gas simultaneously
In a part of SO2Partial particulate object in gas and removing waste gas and greasy dirt.Filler at packed tower 10
Layer 4 uses area load to have CrO3-SnO2The filler of catalyst.Area load has CrO3-SnO2Catalyst
Filler can be by the SO in waste gas2Gas catalysis changes into SO3Gas.
Claims (3)
1. marine diesel desulfurization packed tower, is characterized in that: include that filler tower body, the top of filler tower body set
Putting waste gas outlet, the lower section of filler tower body arranges waste liquid outlet, and the bottom of packed tower body sidewall arranges air inlet
Pipeline joint, air intake duct interface is connected with air intake duct, and air intake duct uses downward-sloping mode to arrange, air intake duct
In install the pre-spray equipment of cleaning mixture, the pre-spray equipment of cleaning mixture is positioned at air intake duct upper inner wall side, washing
The spray direction of the pre-spray equipment of liquid is the direction of flue gas circulation in flue, is positioned at air inlet in filler tower body
Spray catalytic unit is installed in position above pipeline joint, and described spray catalytic unit includes height above
Temperature spray system and the packing layer being positioned at lower section, the top of spray catalytic unit installs demister and cleaning successively
System；
Described packing layer area load has CrO3-SnO2Catalyst.
Marine diesel desulfurization packed tower the most according to claim 1, is characterized in that: described spray
Catalytic unit includes two groups, and two groups of spray catalytic units are arranged in order from top to bottom, often group spray catalytic unit
Packing layer respectively by one support screen be fixed on air intake duct inwall.
Marine diesel desulfurization packed tower the most according to claim 1 and 2, is characterized in that: described
The pre-spray equipment of cleaning mixture uses spray nozzle type liquid spray thrower, and the cleaning mixture of sprinkling is temperature 25 DEG C～50 DEG C
Alkaline solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692439.0A CN103638794B (en) | 2013-12-17 | 2013-12-17 | Marine diesel desulfurization packed tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692439.0A CN103638794B (en) | 2013-12-17 | 2013-12-17 | Marine diesel desulfurization packed tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103638794A CN103638794A (en) | 2014-03-19 |
| CN103638794B true CN103638794B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310692439.0A Active CN103638794B (en) | 2013-12-17 | 2013-12-17 | Marine diesel desulfurization packed tower |
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Families Citing this family (11)
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| CN103894053B (en) * | 2014-03-27 | 2015-10-28 | 哈尔滨工程大学 | A kind of double loop desulfurizer for boats and ships |
| DK178135B1 (en) * | 2014-03-28 | 2015-06-15 | Man Diesel & Turbo Deutschland | An internal combustion engine, and a method of removing sulphur oxides from exhaust gas |
| CN104353357A (en) * | 2014-10-22 | 2015-02-18 | 哈尔滨工程大学 | Integrated exhaust gas scrubbing desulfuration equipment for ship power device and control method |
| CN105251360A (en) * | 2015-10-28 | 2016-01-20 | 苏州仕净环保科技股份有限公司 | Diesel engine flue gas desulfurization and denitrification twin tower |
| CN107174938A (en) * | 2017-07-11 | 2017-09-19 | 山东海新石油化工有限公司 | A kind of desulfurizing tower |
| CN107511047A (en) * | 2017-09-06 | 2017-12-26 | 哈尔滨工程大学 | A kind of marine diesel in-line arrangement exhaust gas scrubber |
| CN107905875A (en) * | 2017-12-18 | 2018-04-13 | 北京联飞翔科技股份有限公司 | A kind of purification of nitrogen oxides device and method |
| CN109966880B (en) * | 2019-04-09 | 2022-02-11 | 江苏科技大学 | Slope self-adaptation sieve board sea water desulfurizing tower |
| CN112403204A (en) * | 2019-08-22 | 2021-02-26 | 中国船舶重工集团公司第七一一研究所 | Compact marine I type scrubbing tower |
| CN112439315A (en) * | 2019-09-05 | 2021-03-05 | 大连海事大学 | Integrated purification system for complex flue gas |
| CN113304608A (en) * | 2021-03-16 | 2021-08-27 | 无锡市华星电力环保工程有限公司 | Flue gas treatment and denitration catalyst thermal desorption integrated device and use method |
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| GB8619456D0 (en) * | 1986-08-08 | 1986-09-17 | Ti Group Services Ltd | Vehicle exhaust systems |
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| SU691185A1 (en) * | 1977-08-01 | 1979-10-15 | Новочеркасский инженерно-мелиоративный институт | Catalyst for the purification of gas from sulphurous anhydride |
| CN1211464A (en) * | 1997-07-19 | 1999-03-24 | 莱也茨·比肖夫有限公司 | Equipment for removing SO2 from flue-gas and producing ammonium sulfate |
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| Publication number | Publication date |
|---|---|
| CN103638794A (en) | 2014-03-19 |
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